Dendrimers

树枝状聚合物
  • 文章类型: Journal Article
    目前高血压在全球范围内的流行并不是一种疾病本身,而是严重心血管疾病如外周动脉疾病的重要危险因素。心力衰竭,心肌梗塞,和中风。尽管市场上有许多通过各种作用机制起作用的药物以常规配方可用于治疗高血压,这些药物的生物利用度面临着巨大的困难,给药,和相关的副作用,这大大降低了他们的治疗干预措施的有效性。大量研究表明,纳米载体和纳米制剂可以最大限度地减少与高剂量药物相关的毒性,同时大大提高药物的生物利用度并降低给药频率。

    这篇综述阐明了传统抗高血压制剂带来的困难,并强调了口服纳米颗粒系统解决这些问题的必要性。因为高血压有昼夜节律的血压模式,计时疗法在治疗这种疾病中非常重要。另一方面,纳米颗粒系统在控制高血压方面可能非常重要。

    The current global epidemic of hypertension is not a disease in and of itself but rather a significant risk factor for serious cardiovascular conditions such as peripheral artery disease, heart failure, myocardial infarction, and stroke. Although many medications that work through various mechanisms of action are available on the market in conventional formulations to treat hypertension, these medications face significant difficulties with their bioavailability, dosing, and associated side effects, which significantly reduces the effectiveness of their therapeutic interventions. Numerous studies have shown that nanocarriers and nanoformulations can minimize the toxicity associated with high doses of the drug while greatly increasing the drug\'s bioavailability and reducing the frequency of dosing.

    This review sheds light on the difficulties posed by traditional antihypertensive formulations and highlights the necessity of oral nanoparticulate systems to solve these issues. Because hypertension has a circadian blood pressure pattern, chronotherapeutics can be very important in treating the condition. On the other hand, nanoparticulate systems can be very important in managing hypertension.

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  • 文章类型: Journal Article
    纳米技术可能为克服胰腺癌治疗的挑战开辟新的途径,因为广泛的抗癌药物库由于在胰腺导管腺癌中形成多种耐药机制而无法实现其在胰腺导管腺癌中的全部治疗潜力。肿瘤。许多研究报道了各种纳米制剂在胰腺癌治疗中的成功使用。
    这篇综述涵盖了在著名专利数据库(如Patentscope和Espacenet)上提供的所有主要的基于纳米技术的专利文献,在2007-2022年期间。这是一个完全以专利为中心的综述,它包括基于纳米技术的胰腺癌治疗和诊断工具的临床和非临床数据。
    为了理解,这些专利被归类为各种配方特定的头部,如金属/非金属纳米颗粒,聚合物纳米颗粒,脂质体,碳纳米管,蛋白质纳米颗粒和脂质体。这将一种特定的纳米颗粒类型与另一种纳米颗粒类型区分开来,并使这篇综述成为一种综合专利汇编,迄今为止,在胰腺癌纳米技术制剂的历史上尚未报道。
    UNASSIGNED: Nanotechnology may open up new avenues for overcoming the challenges of pancreatic cancer therapy as a broad arsenal of anticancer medicines fail to realize their full therapeutic potential in pancreatic ductal adenocarcinoma due to the formation of multiple resistance mechanisms inside the tumor. Many studies have reported the successful use of various nano formulations in pancreatic cancer therapy.
    UNASSIGNED: This review covers all the major nanotechnology-based patent litrature available on renowned patent data bases like Patentscope and Espacenet, through the time period of 2007-2022. This is an entirely patent centric review, and it includes both clinical and non-clinical data available on nanotechnology-based therapeutics and diagnostic tools for pancreatic cancer.
    UNASSIGNED: For the sake of understanding, the patents are categorized under various formulation-specific heads like metallic/non-metallic nanoparticles, polymeric nanoparticles, liposomes, carbon nanotubes, protein nanoparticles and liposomes. This distinguishes one specific nanoparticle type from another and makes this review a one-of-a-kind comprehensive patent compilation that has not been reported so far in the history of nanotechnological formulations in pancreatic cancer.
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  • 文章类型: Journal Article
    结核病(TB)是由结核分枝杆菌在人肺泡巨噬细胞内复制引起的传染病。这种疾病在全世界引起显著的发病率和死亡率。根据世界卫生组织的数据,2021年有140万人死于这种疾病。这表明,尽管现代医学取得了进步,诊断方面的改进,和药物敏感性试验的发展,结核病仍然是全球公共卫生的威胁。在这个意义上,以宿主为导向的治疗可能为结核病的治疗提供新的方法,miRNAs的表达与各种炎症介质的浓度变化相关,这些炎症介质的浓度与结核分枝杆菌感染的病理生理学有关。因此,miRNAs的施用可能有助于调节生物体的免疫应答。然而,直接施用miRNA,没有足够的封装,将核酸暴露于胞质核酸酶的活性,限制其应用。树枝状聚合物是一类高度支化的分子,具有明确的结构和分支构象,产生促进物理固定的空腔。和允许与感兴趣的分子发生化学相互作用的官能团。此外,树枝状聚合物可以很容易地功能化到不同的细胞,其中的巨噬细胞。在这个意义上,各种研究已经提出了使用不同的细胞受体作为靶分子来瞄准巨噬细胞的树状聚合物,从而在感兴趣的细胞中释放药物或核酸。基于考虑,本综述的主要目的是全面探索功能化树枝状聚合物作为miRNAs和其他治疗剂进入巨噬细胞的递送载体的潜力。这项工作旨在提供有关使用功能化树枝状聚合物作为结核病治疗创新方法的见解。专注于它们靶向和向巨噬细胞递送治疗性货物的能力。
    Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis that replicates inside human alveolar macrophages. This disease causes significant morbidity and mortality throughout the world. According to the World Health Organization 1.4 million people died of this disease in 2021. This indicates that despite the progress of modern medicine, improvements in diagnostics, and the development of drug susceptibility tests, TB remains a global threat to public health. In this sense, host-directed therapy may provide a new approach to the cure of TB, and the expression of miRNAs has been correlated with a change in the concentration of various inflammatory mediators whose concentrations are responsible for the pathophysiology of M. tuberculosis infection. Thus, the administration of miRNAs may help to modulate the immune response of organisms. However, direct administration of miRNAs, without adequate encapsulation, exposes nucleic acids to the activity of cytosolic nucleases, limiting their application. Dendrimers are a family of highly branched molecules with a well-defined architecture and a branched conformation which gives rise to cavities that facilitate physical immobilization, and functional groups that allow chemical interaction with molecules of interest. Additionally, dendrimers can be easily functionalized to target different cells, macrophages among them. In this sense, various studies have proposed the use of different cell receptors as target molecules to aim dendrimers at macrophages and thus release drugs or nucleic acids in the cell of interest. Based on the considerations, the primary objective of this review is to comprehensively explore the potential of functionalized dendrimers as delivery vectors for miRNAs and other therapeutic agents into macrophages. This work aims to provide insights into the use of functionalized dendrimers as an innovative approach for TB treatment, focusing on their ability to target and deliver therapeutic cargo to macrophages.
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  • 文章类型: Journal Article
    如果传感器富含某些特性,则可以称为理想或完美的传感器。,优越的检测范围,高灵敏度,选择性,决议,再现性,重复性,和响应时间与良好的流程。最近,由纳米粒子(NPs)制成的生物传感器由于其在几乎所有科学技术领域的出色应用而获得了很高的普及。在生物传感器中使用NP通常是为了填补转换器和生物受体之间的空白,这是纳米级的。同时,NP和电化学技术的使用导致了具有高灵敏度和分解能力的生物传感器的出现。本文综述了由NPs制成的生物传感器的发展,例如贵金属NPs和金属氧化物NPs。纳米线(NWs),纳米棒(NRs),碳纳米管(CNTs),量子点(QDs),和树枝状聚合物及其随着纳米技术的扩展在生物传感技术方面的最新进展。
    A sensor can be called ideal or perfect if it is enriched with certain characteristics viz., superior detections range, high sensitivity, selectivity, resolution, reproducibility, repeatability, and response time with good flow. Recently, biosensors made of nanoparticles (NPs) have gained very high popularity due to their excellent applications in nearly all the fields of science and technology. The use of NPs in the biosensor is usually done to fill the gap between the converter and the bioreceptor, which is at the nanoscale. Simultaneously the uses of NPs and electrochemical techniques have led to the emergence of biosensors with high sensitivity and decomposition power. This review summarizes the development of biosensors made of NPssuch as noble metal NPs and metal oxide NPs, nanowires (NWs), nanorods (NRs), carbon nanotubes (CNTs), quantum dots (QDs), and dendrimers and their recent advancement in biosensing technology with the expansion of nanotechnology.
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  • 文章类型: Journal Article
    HCV,丙型肝炎病毒,是一种对肝脏造成损害的病毒.慢性感染或缺乏治疗都会增加发病率,除非是急性感染,因为身体在没有任何干预的情况下清除病毒。此外,这种病毒有许多基因型,直到现在,目前还没有一种单一的治疗方法能够同时影响和治疗所有这些基因型。这篇综述将讨论主要和最常用的旧治疗方法,IFN-a,PEGIFN-a,利巴韦林,Celgosvir,和索非布韦单独和与其他药物的组合及其缺点。与独立给药相比,应联合给药,以提高对病毒的作用,就像sofosbuvir一样。由于这些原因,需要新的治疗方法和诊断工具,纳米技术的规则来到这里。碳纳米管的作用,树枝状聚合物,和富勒烯将被讨论。CNT,碳纳米管,是由圆柱形石墨片组成的一维结构,主要用于HCV的诊断目的。树枝状聚合物,三维高度分支结构,是大分子,提供更好的药物输送和治疗选择,由于其独特的结构,可以修改,生产多功能类型;每个都有独特的属性。富勒烯是笼状结构,与碳纳米管密切相关,并且由可以被其他原子取代的碳原子组成,这些原子反过来为这些碳基材料提供了无限的用途。富勒烯规则是独特的,因为它具有防止病毒结合和作用于病毒复制酶的两种机制。然而,他们的费用需要确定;否则,它会导致细胞毒性。最后,尚未对纳米技术对HCV的作用进行综述.
    HCV, hepatitis C virus, is a virus that causes damage to the liver. Both chronic infection or lack of treatment increase morbidity except if it is an acute infection, as the body clears the virus without any intervention. Also, the virus has many genotypes, and until now, there has yet to be a single treatment capable of affecting and treating all these genotypes at once. This review will discuss the main and most used old treatments, IFN-a, PEG IFN-a, Ribavirin, Celgosvir, and sofosbuvir alone and with the combination of other drugs and their drawbacks. They should be given in combination to improve the effect on the virus compared with being administrated independently, as in the case of sofosbuvir. For these reasons, the need for new treatments and diagnostic tools arises, and the rule of nanotechnology comes here. The role of carbon nanotubes, dendrimers, and fullerenes will be discussed. CNTs, carbon nanotubes, are one-dimensional structures composed of a cylindrical sheet of graphite and are mainly used for diagnostic purposes against HCV. Dendrimers, three-dimensional highly branched structures, are macromolecules that provide better drug delivery and treatment options due to their unique structure that can be modified, producing versatile types; each has unique properties. Fullerenes which are cage like structures derived and closely related to CNTs, and composed of carbon atoms that can be substituted by other atoms which in return open unlimited usage for these carbon based materials. Fullerenes rule is unique since it has two mechanisms that prevent the virus from binding and acting on the virus-replicating enzyme. However, their charge needs to be determined; otherwise, it will lead to cytotoxicity. Lastly, no review has been done on the role of nanotechnology against HCV yet.
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  • 文章类型: Journal Article
    阿尔茨海默氏症是影响脑细胞功能的最常见的神经退行性疾病之一。在这种疾病中,大脑中的神经元被认为是稳定的衰变,但一致的是淀粉样蛋白的积累,特别是β-淀粉样蛋白,淀粉样蛋白,和Tau蛋白。最负责任的淀粉样蛋白是淀粉样蛋白-40和淀粉样蛋白-42,它们很有可能在脑细胞中积累过多,干扰正常脑细胞功能并引发脑细胞死亡。药物科学的进步导致了Nanotheranosics技术的发展,可用于诊断和治疗阿尔茨海默氏症。它们是用治疗部分以及诊断部分官能化的胶体纳米颗粒。这篇文章讨论了阿尔茨海默氏症的预后,各种纳米热学方法(纳米粒子,量子点,适体,树枝状聚合物,etc),以及他们最近在管理阿尔茨海默氏症方面的进步。此外,讨论了有关nanotheranosics的各种体外和体内诊断方法。
    描述阿尔茨海默病关于β淀粉样蛋白在疾病预后中的病理生理学。介绍了用于检测和治疗阿尔茨海默病的各种纳米纳米粒子技术,适体,和树枝状聚合物用作体内诊断和治疗实体(MRI,OI)和体外(STM,TRPS)检测阿尔茨海默病的诊断方法。
    Alzheimer\'s is one of the most common neurodegenerative illnesses that affect brain cellular function. In this disease, the neurons in the brain are considered to be decaying steadily but consistently by the accumulation of amyloid mass, particularly the β-amyloids, amyloid proteins, and Tau proteins. The most responsible amyloid-proteins are amyloid-40 and amyloid-42, which have a high probability of accumulating in excess over the brain cell, interfering with normal brain cell function and triggering brain cell death. The advancement of pharmaceutical sciences leads to the development of Nanotheranostics technology, which may be used to diagnose and treat Alzheimer\'s. They are the colloidal nanoparticles functionalised with the therapeutic moiety as well as a diagnostic moiety. This article discusses the prognosis of Alzheimer\'s, various nanotheranostics approaches (nanoparticles, quantum dots, aptamers, dendrimers, etc), and their recent advancement in managing Alzheimer\'s. Also, various in-vitro and in-vivo diagnostic methodologies were discussed with respect to nanotheranostics.
    Describing the pathophysiology of Alzheimer’s with respect to amyloid β in the prognosis of the diseasePresenting the various nanotheranostics techniques for the detection and treatment of Alzheimer’s diseaseNanoparticles, Aptamers, and Dendrimers used as diagnostic and treatment entitiesIn-vivo (MRI, OI) and In-vitro (STM, TRPS) diagnostic approaches for detecting Alzheimer’s disease.
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  • 文章类型: Journal Article
    In recent years, drug manufacturers and researchers have begun to consider the nanobiotechnology approach to improve the drug delivery system for tumour and cancer diseases. In this article, we review current strategies to improve tumour and cancer drug delivery, which mainly focuses on sustaining biocompatibility, biodistribution, and active targeting. The conventional therapy using cornerstone drugs such as fludarabine, cisplatin etoposide, and paclitaxel has its own challenges especially not being able to discriminate between tumour versus normal cells which eventually led to toxicity and side effects in the patients. In contrast to the conventional approach, nanoparticle-based drug delivery provides target-specific delivery and controlled release of the drug, which provides a better therapeutic window for treatment options by focusing on the eradication of diseased cells via active targeting and sparing normal cells via passive targeting. Additionally, treatment of tumours associated with the brain is hampered by the impermeability of the blood-brain barriers to the drugs, which eventually led to poor survival in the patients. Nanoparticle-based therapy offers superior delivery of drugs to the target by breaching the blood-brain barriers. Herein, we provide an overview of the properties of nanoparticles that are crucial for nanotechnology applications. We address the potential future applications of nanobiotechnology targeting specific or desired areas. In particular, the use of nanomaterials, biostructures, and drug delivery methods for the targeted treatment of tumours and cancer are explored.
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  • 文章类型: Journal Article
    两亲性Janus树枝状聚合物是包含亲水和疏水单元的排列,能够通过树枝状聚合物单元之间的分子间非共价相互作用形成有序聚集体。与传统的树枝状聚合物相比,这些分子自组装具有特定和有效的属性,即不同终端组的存在,设计新的精心制作的材料是必不可少的。本文将重点介绍两亲性Janus树枝状聚合物的药物和生物医学应用。开发新型优化药物制剂的重要信息,如结构分类,合成途径,属性和应用,将提供这种类型的Janus树枝状聚合物的完整表征。这项工作将为参与设计基于两亲性Janus树枝状聚合物的纳米材料的树枝状聚合物专家提供最新背景,以便在这个有前途的领域进行未来的创新。
    Amphiphilic Janus dendrimers are arrangements containing both hydrophilic and hydrophobic units, capable of forming ordered aggregates by intermolecular noncovalent interactions between the dendrimer units. Compared to conventional dendrimers, these molecular self-assemblies possess particular and effective attributes i.e., the presence of different terminal groups, essential to design new elaborated materials. The present review will focus on the pharmaceutical and biomedical application of amphiphilic Janus dendrimers. Important information for the development of novel optimized pharmaceutical formulations, such as structural classification, synthetic pathways, properties and applications, will offer the complete characterization of this type of Janus dendrimers. This work will constitute an up-to-date background for dendrimer specialists involved in designing amphiphilic Janus dendrimer-based nanomaterials for future innovations in this promising field.
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  • 文章类型: Review
    纳米技术平台的配方促进治疗药物递送,并提供各种优势,如生物相容性,非炎性效应,高治疗输出,生物降解性,无毒性,与自由给药相比,生物相容性。由于常规药物递送至癌组织的固有缺点,针对此类疾病,已经开发了基于纳米技术的替代方法。卵巢癌是主要的妇科癌症,由于其复发和晚期诊断,死亡率较高。近年来,医学纳米技术领域在解决现有问题和改善包括癌症在内的各种疾病的诊断和治疗方面取得了重大进展。然而,有关纳米技术的文献和当前综述主要集中在其在其他癌症或疾病中的应用。在这次审查中,我们专注于卵巢癌靶向治疗和诊断的纳米药物递送系统,和不同的纳米载体系统,包括树枝状聚合物,纳米粒子,脂质体,纳米胶囊,和卵巢癌的纳米胶束已经被讨论过。与纳米制剂的非功能化对应物相比,综述了通过配体功能化纳米制剂对卵巢癌的治疗潜力和优先靶向的研究进展。此外,许多生物标志物,如前列腺,粘蛋白1,CA-125,凋亡重复杆状病毒抑制剂-5,人附睾蛋白-4和e-cadherin已被鉴定并阐明,用于评估卵巢癌。本文介绍了基于纳米材料生物传感器的肿瘤标志物及其用于卵巢癌诊断的各种类型。在协会中,卵巢癌治疗的不同纳米载体方法也得到了支持。为了确保卵巢癌的控制和高效检测,在肿瘤学领域,迫切需要更快,成本更低的医疗工具。
    Formulations from nanotechnology platform promote therapeutic drug delivery and offer various advantages such as biocompatibility, non-inflammatory effects, high therapeutic output, biodegradability, non-toxicity, and biocompatibility in comparison with free drug delivery. Due to inherent shortcomings of conventional drug delivery to cancerous tissues, alternative nanotechnological-based approaches have been developed for such ailments. Ovarian cancer is the leading gynecological cancer with higher mortality rates due to its reoccurrence and late diagnosis. In recent years, the field of medical nanotechnology has witnessed significant progress in addressing existing problems and improving the diagnosis and therapy of various diseases including cancer. Nevertheless, the literature and current reviews on nanotechnology are mainly focused on its applications in other cancers or diseases. In this review, we focused on the nanoscale drug delivery systems for ovarian cancer targeted therapy and diagnosis, and different nanocarriers systems including dendrimers, nanoparticles, liposomes, nanocapsules, and nanomicelles for ovarian cancer have been discussed. In comparison to non-functionalized counterparts of nanoformulations, the therapeutic potential and preferential targeting of ovarian cancer through ligand functionalized nanoformulations\' development has been reviewed. Furthermore, numerous biomarkers such as prostatic, mucin 1, CA-125, apoptosis repeat baculoviral inhibitor-5, human epididymis protein-4, and e-cadherin have been identified and elucidated in this review for the assessment of ovarian cancer. Nanomaterial biosensor-based tumor markers and their various types for ovarian cancer diagnosis are explained in this article. In association, different nanocarrier approaches for the ovarian cancer therapy have also been underpinned. To ensure ovarian cancer control and efficient detection, there is an urgent need for faster and less costly medical tools in the arena of oncology.
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  • 文章类型: Journal Article
    纳米技术是用于诊断和治疗各种疾病的新兴和先进的研究领域。随着纳米技术的发展,由于其独特的光学特性,不同的纳米粒子被用于治疗癌症,优异的生物相容性,表面效应,和小尺寸效果。纳米颗粒是具有1至100nm的特定尺寸的颗粒。这些纳米粒子是零维度的,一维,二维和三维等。在目前的情况下,各种研究都集中在定制的纳米颗粒的合成,用于医学应用,可用于基于形态学的癌症治疗,composition,与靶细胞相互作用。发现胃肠(GI)肿瘤是具有最高复发率的最致命的癌症类型之一。胃肠道肿瘤因其部位深、手术复杂,其诊断和治疗具有很大的挑战性。纳米技术为胃肠道疾病提供了快速诊断和即时治疗。多种纳米材料被用于胃肠道疾病的诊断和治疗。纳米颗粒直接靶向肿瘤细胞作为诊断和治疗工具,促进肿瘤细胞的识别和去除。许多纳米粒子被开发用于量子点(QD),碳纳米管(CNTs),金属纳米粒子(MNPs),树枝状等.这篇综述文章概述了最有前途的纳米材料用于胃肠道疾病的诊断和治疗。这篇综述试图结合当前纳米材料的许多用途,具有治疗胃肠道疾病的巨大潜力。
    Nanotechnology is the emerging and advance field of research for the diagnosis and treatment of various diseases. With the development of nanotechnology, different nanoparticles are used in the treatment of cancer due to their unique optical properties, excellent biocompatibility, surface effects, and small size effects. Nanoparticles are the particles which have the particular size from 1 to 100 nm. These nanoparticles are zero dimension, one dimension, two dimension and three dimension etc. In present scenario a variety of research is focused on the tailored synthesis of nanoparticles for medicinal applications that can be used for cancer treatment based on the morphology, composition, interaction with target cell. The gastrointestinal (GI) tumors are found one of the deadest cancer types with highest reoccurrence rates. The diagnosis and treatment of gastrointestinal cancer is very challenging due to its deep location and complicated surgery. Nanotechnology provides fast diagnosis and immediate treatment for the gastrointestinal disease. A variety of nanomaterials are used for the diagnosis and treatment of GI disease. Nanoparticles target directly to the tumor cell as diagnostic and therapeutic tools facilitating the identification and removal of tumor cells. A number of nanoparticles are developed for the uses are quantum dots (QDs), carbon nanotubes (CNTs), metallic nanoparticles (MNPs), Dendrimers etc. This review article gives an overview of the most promising nanomaterials used for the diagnosis and treatment of GI diseases. This review attempts to incorporate numerous uses for the most current nanomaterials, which have great potential for treating gastrointestinal diseases.
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